trunk-47381HEADmaster

1 files changed, 421 insertions, 0 deletions

diff --git a/target/linux/generic/files/crypto/ocf/hifn/hifnHIPP.c b/target/linux/generic/files/crypto/ocf/hifn/hifnHIPP.c
new file mode 100644
index 0000000..56b8a5c
--- /dev/null
+++ b/target/linux/generic/files/crypto/ocf/hifn/hifnHIPP.c
@@ -0,0 +1,421 @@
+/*-
+ * Driver for Hifn HIPP-I/II chipset
+ * Copyright (c) 2006 Michael Richardson <mcr@xelerance.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Effort sponsored by Hifn Inc.
+ *
+ */
+
+/*
+ * Driver for various Hifn encryption processors.
+ */
+#include <linux/version.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) && !defined(AUTOCONF_INCLUDED)
+#include <linux/config.h>
+#endif
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/wait.h>
+#include <linux/sched.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/random.h>
+#include <linux/skbuff.h>
+#include <linux/uio.h>
+#include <linux/sysfs.h>
+#include <linux/miscdevice.h>
+#include <asm/io.h>
+
+#include <cryptodev.h>
+
+#include "hifnHIPPreg.h"
+#include "hifnHIPPvar.h"
+
+#if 1
+#define	DPRINTF(a...)	if (hipp_debug) { \
+							printk("%s: ", sc ? \
+								device_get_nameunit(sc->sc_dev) : "hifn"); \
+							printk(a); \
+						} else
+#else
+#define	DPRINTF(a...)
+#endif
+
+typedef int bus_size_t;
+
+static inline int
+pci_get_revid(struct pci_dev *dev)
+{
+	u8 rid = 0;
+	pci_read_config_byte(dev, PCI_REVISION_ID, &rid);
+	return rid;
+}
+
+#define debug hipp_debug
+int hipp_debug = 0;
+module_param(hipp_debug, int, 0644);
+MODULE_PARM_DESC(hipp_debug, "Enable debug");
+
+int hipp_maxbatch = 1;
+module_param(hipp_maxbatch, int, 0644);
+MODULE_PARM_DESC(hipp_maxbatch, "max ops to batch w/o interrupt");
+
+static	int  hipp_probe(struct pci_dev *dev, const struct pci_device_id *ent);
+static	void hipp_remove(struct pci_dev *dev);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)
+static irqreturn_t hipp_intr(int irq, void *arg);
+#else
+static irqreturn_t hipp_intr(int irq, void *arg, struct pt_regs *regs);
+#endif
+
+static int hipp_num_chips = 0;
+static struct hipp_softc *hipp_chip_idx[HIPP_MAX_CHIPS];
+
+static	int hipp_newsession(device_t, u_int32_t *, struct cryptoini *);
+static	int hipp_freesession(device_t, u_int64_t);
+static	int hipp_process(device_t, struct cryptop *, int);
+
+static device_method_t hipp_methods = {
+	/* crypto device methods */
+	DEVMETHOD(cryptodev_newsession,	hipp_newsession),
+	DEVMETHOD(cryptodev_freesession,hipp_freesession),
+	DEVMETHOD(cryptodev_process,	hipp_process),
+};
+
+static __inline u_int32_t
+READ_REG(struct hipp_softc *sc, unsigned int barno, bus_size_t reg)
+{
+	u_int32_t v = readl(sc->sc_bar[barno] + reg);
+	//sc->sc_bar0_lastreg = (bus_size_t) -1;
+	return (v);
+}
+static __inline void
+WRITE_REG(struct hipp_softc *sc, unsigned int barno, bus_size_t reg, u_int32_t val)
+{
+	writel(val, sc->sc_bar[barno] + reg);
+}
+
+#define READ_REG_0(sc, reg)         READ_REG(sc, 0, reg)
+#define WRITE_REG_0(sc, reg, val)   WRITE_REG(sc,0, reg, val)
+#define READ_REG_1(sc, reg)         READ_REG(sc, 1, reg)
+#define WRITE_REG_1(sc, reg, val)   WRITE_REG(sc,1, reg, val)
+
+static int
+hipp_newsession(device_t dev, u_int32_t *sidp, struct cryptoini *cri)
+{
+	return EINVAL;
+}
+
+static int
+hipp_freesession(device_t dev, u_int64_t tid)
+{
+	return EINVAL;
+}
+
+static int
+hipp_process(device_t dev, struct cryptop *crp, int hint)
+{
+	return EINVAL;
+}
+
+static const char*
+hipp_partname(struct hipp_softc *sc, char buf[128], size_t blen)
+{
+	char *n = NULL;
+
+	switch (pci_get_vendor(sc->sc_pcidev)) {
+	case PCI_VENDOR_HIFN:
+		switch (pci_get_device(sc->sc_pcidev)) {
+		case PCI_PRODUCT_HIFN_7855:	n = "Hifn 7855";
+		case PCI_PRODUCT_HIFN_8155:	n = "Hifn 8155";
+		case PCI_PRODUCT_HIFN_6500:	n = "Hifn 6500";
+		}
+	}
+
+	if(n==NULL) {
+		snprintf(buf, blen, "VID=%02x,PID=%02x",
+			 pci_get_vendor(sc->sc_pcidev),
+			 pci_get_device(sc->sc_pcidev));
+	} else {
+		buf[0]='\0';
+		strncat(buf, n, blen);
+	}
+	return buf;
+}
+
+struct hipp_fs_entry {
+	struct attribute attr;
+	/* other stuff */
+};
+
+
+static ssize_t
+cryptoid_show(struct device *dev,
+	      struct device_attribute *attr,
+	      char *buf)						
+{								
+	struct hipp_softc *sc;					
+
+	sc = pci_get_drvdata(to_pci_dev (dev));
+	return sprintf (buf, "%d\n", sc->sc_cid);
+}
+
+struct device_attribute hipp_dev_cryptoid = __ATTR_RO(cryptoid);
+
+/*
+ * Attach an interface that successfully probed.
+ */
+static int
+hipp_probe(struct pci_dev *dev, const struct pci_device_id *ent)
+{
+	struct hipp_softc *sc = NULL;
+	int i;
+	//char rbase;
+	//u_int16_t ena;
+	int rev;
+	//int rseg;
+	int rc;
+
+	DPRINTF("%s()\n", __FUNCTION__);
+
+	if (pci_enable_device(dev) < 0)
+		return(-ENODEV);
+
+	if (pci_set_mwi(dev))
+		return(-ENODEV);
+
+	if (!dev->irq) {
+		printk("hifn: found device with no IRQ assigned. check BIOS settings!");
+		pci_disable_device(dev);
+		return(-ENODEV);
+	}
+
+	sc = (struct hipp_softc *) kmalloc(sizeof(*sc), GFP_KERNEL);
+	if (!sc)
+		return(-ENOMEM);
+	memset(sc, 0, sizeof(*sc));
+
+	softc_device_init(sc, "hifn-hipp", hipp_num_chips, hipp_methods);
+
+	sc->sc_pcidev = dev;
+	sc->sc_irq = -1;
+	sc->sc_cid = -1;
+	sc->sc_num = hipp_num_chips++;
+
+	if (sc->sc_num < HIPP_MAX_CHIPS)
+		hipp_chip_idx[sc->sc_num] = sc;
+
+	pci_set_drvdata(sc->sc_pcidev, sc);
+
+	spin_lock_init(&sc->sc_mtx);
+
+	/*
+	 * Setup PCI resources.
+	 * The READ_REG_0, WRITE_REG_0, READ_REG_1,
+	 * and WRITE_REG_1 macros throughout the driver are used
+	 * to permit better debugging.
+	 */
+	for(i=0; i<4; i++) {
+		unsigned long mem_start, mem_len;
+		mem_start = pci_resource_start(sc->sc_pcidev, i);
+		mem_len   = pci_resource_len(sc->sc_pcidev, i);
+		sc->sc_barphy[i] = (caddr_t)mem_start;
+		sc->sc_bar[i] = (ocf_iomem_t) ioremap(mem_start, mem_len);
+		if (!sc->sc_bar[i]) {
+			device_printf(sc->sc_dev, "cannot map bar%d register space\n", i);
+			goto fail;
+		}
+	}
+
+	//hipp_reset_board(sc, 0);
+	pci_set_master(sc->sc_pcidev);
+
+	/*
+	 * Arrange the interrupt line.
+	 */
+	rc = request_irq(dev->irq, hipp_intr, IRQF_SHARED, "hifn", sc);
+	if (rc) {
+		device_printf(sc->sc_dev, "could not map interrupt: %d\n", rc);
+		goto fail;
+	}
+	sc->sc_irq = dev->irq;
+
+	rev = READ_REG_1(sc, HIPP_1_REVID) & 0xffff;
+
+	{
+		char b[32];
+		device_printf(sc->sc_dev, "%s, rev %u",
+			      hipp_partname(sc, b, sizeof(b)), rev);
+	}
+
+#if 0
+	if (sc->sc_flags & HIFN_IS_7956)
+		printf(", pll=0x%x<%s clk, %ux mult>",
+			sc->sc_pllconfig,
+			sc->sc_pllconfig & HIFN_PLL_REF_SEL ? "ext" : "pci",
+			2 + 2*((sc->sc_pllconfig & HIFN_PLL_ND) >> 11));
+#endif
+	printf("\n");
+
+	sc->sc_cid = crypto_get_driverid(softc_get_device(sc),CRYPTOCAP_F_HARDWARE);
+	if (sc->sc_cid < 0) {
+		device_printf(sc->sc_dev, "could not get crypto driver id\n");
+		goto fail;
+	}
+
+#if 0 /* cannot work with a non-GPL module */
+	/* make a sysfs entry to let the world know what entry we got */
+	sysfs_create_file(&sc->sc_pcidev->dev.kobj, &hipp_dev_cryptoid.attr);
+#endif
+
+#if 0
+	init_timer(&sc->sc_tickto);
+	sc->sc_tickto.function = hifn_tick;
+	sc->sc_tickto.data = (unsigned long) sc->sc_num;
+	mod_timer(&sc->sc_tickto, jiffies + HZ);
+#endif
+
+#if 0 /* no code here yet ?? */
+	crypto_register(sc->sc_cid, CRYPTO_3DES_CBC, 0, 0);
+#endif
+
+	return (0);
+
+fail:
+	if (sc->sc_cid >= 0)
+		crypto_unregister_all(sc->sc_cid);
+	if (sc->sc_irq != -1)
+		free_irq(sc->sc_irq, sc);
+	
+#if 0
+	if (sc->sc_dma) {
+		/* Turn off DMA polling */
+		WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
+			    HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
+		
+		pci_free_consistent(sc->sc_pcidev,
+				    sizeof(*sc->sc_dma),
+				    sc->sc_dma, sc->sc_dma_physaddr);
+	}
+#endif
+	kfree(sc);
+	return (-ENXIO);
+}
+
+/*
+ * Detach an interface that successfully probed.
+ */
+static void
+hipp_remove(struct pci_dev *dev)
+{
+	struct hipp_softc *sc = pci_get_drvdata(dev);
+	unsigned long l_flags;
+
+	DPRINTF("%s()\n", __FUNCTION__);
+
+	/* disable interrupts */
+	HIPP_LOCK(sc);
+
+#if 0
+	WRITE_REG_1(sc, HIFN_1_DMA_IER, 0);
+	HIFN_UNLOCK(sc);
+
+	/*XXX other resources */
+	del_timer_sync(&sc->sc_tickto);
+
+	/* Turn off DMA polling */
+	WRITE_REG_1(sc, HIFN_1_DMA_CNFG, HIFN_DMACNFG_MSTRESET |
+	    HIFN_DMACNFG_DMARESET | HIFN_DMACNFG_MODE);
+#endif
+
+	crypto_unregister_all(sc->sc_cid);
+
+	free_irq(sc->sc_irq, sc);
+
+#if 0
+	pci_free_consistent(sc->sc_pcidev, sizeof(*sc->sc_dma),
+                sc->sc_dma, sc->sc_dma_physaddr);
+#endif
+}
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)
+static irqreturn_t hipp_intr(int irq, void *arg)
+#else
+static irqreturn_t hipp_intr(int irq, void *arg, struct pt_regs *regs)
+#endif
+{
+	struct hipp_softc *sc = arg;
+
+	sc = sc; /* shut up compiler */
+
+	return IRQ_HANDLED;
+}
+
+static struct pci_device_id hipp_pci_tbl[] = {
+	{ PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_7855,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, },
+	{ PCI_VENDOR_HIFN, PCI_PRODUCT_HIFN_8155,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, },
+	{ 0 }, /* terminating entry */
+};
+MODULE_DEVICE_TABLE(pci, hipp_pci_tbl);
+
+static struct pci_driver hipp_driver = {
+	.name         = "hipp",
+	.id_table     = hipp_pci_tbl,
+	.probe        =	hipp_probe,
+	.remove       = hipp_remove,
+	/* add PM stuff here one day */
+};
+
+static int __init hipp_init (void)
+{
+	struct hipp_softc *sc = NULL;
+	int rc;
+
+	DPRINTF("%s(%p)\n", __FUNCTION__, hipp_init);
+
+	rc = pci_register_driver(&hipp_driver);
+	pci_register_driver_compat(&hipp_driver, rc);
+
+	return rc;
+}
+
+static void __exit hipp_exit (void)
+{
+	pci_unregister_driver(&hipp_driver);
+}
+
+module_init(hipp_init);
+module_exit(hipp_exit);
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_AUTHOR("Michael Richardson <mcr@xelerance.com>");
+MODULE_DESCRIPTION("OCF driver for hifn HIPP-I/II PCI crypto devices");